ceiling fixture with on-off wall switch

[carlu]

I have a ceiling fixture with an on-off wall switch. I would like to add an outlet but cannot figure out how to branch into the wall switch circuit. The room is finished and it would be difficult to lead a new line from the ceiling fixture and the main power line. The outlet can be controlled by the wall switch, it doesn't matter. Any suggestions?

[jbfan]

First you have to tell us what are the wires in the switch location, then we can tell you if it can be done